Dynamic Behaviour Analysis of Optical Linear Encoder under Mechanical Vibrations

Gurauskis, Donatas; Kilikevičius, Artūras

doi:10.5755/j01.mech.26.1.23070

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…2 In the experimental methods, amplitudes were obtained with accelerometers placed on the mechanical structure. 3–5 Visual experiments were carried out on structures that caused blurring due to vibration. 4 In order to reduce focus errors caused by random vibration loads in optomechanical systems, the relative displacements of mechanics were obtained by the FE method.…”

Section: Introductionmentioning

confidence: 99%

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Optomechanical system design under road vibration conditions

Sag

Erol

Gursoy

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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Optomechanical systems used in vehicles or moving platforms are exposed to vibration loads from road effects. This study investigated the dynamic behavior of an optomechanical system exposed to random vibrations. Random vibration analysis and laboratory tests of the system were performed with the MIL-STD-810 test method standard. The relative displacements of two lenses in the optomechanical system were obtained under vibration loads by using the finite element (FE) method. The displacements were examined by tests. The obtained relative displacements of the lenses were used as input to the optical analysis and the laser spot position was obtained. The obtained spot positions were evaluated comparatively with the tests. The optical analysis results were consistent with the tests. Using the verified FE and optical models, structural modifications were made in the basic design. Five different design changes were examined. The natural frequencies and the mass of the entire system and the relative displacements of the lenses were obtained for comparative evaluation. Finally, the optimum design minimally affected by vibration loads was achieved.

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Section: Introductionmentioning

confidence: 99%

“…2 Structural improvement studies were carried out with the results obtained from analyzes and experimental methods. 3–8 In addition to structural changes, damping layer studies were also carried out to study the ability of the structure to absorb vibrations. 9…”

Section: Introductionmentioning

confidence: 99%